1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffde6dad4660515d993e9293861db1e737d9d4291b8fc3a0a92375ea4b266ec2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13650135-b810-4542-9b93-6aa9bd5e4392.json and https://artists.proofprofile.net/proofs/artist/13650135-b810-4542-9b93-6aa9bd5e4392.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Songs for Girls 1 (The Valentines Day Mixtape)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa270cf146457bcb3ce735aa713e30d46b0966b67813a74de476a55f96273cf25. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21435654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea7e68e6bfde43dbb3aa9690e4271fec75fd817d9fd501736fcd426e302ac08. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACH1522372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe2bb1c7d371933c34ce0f4b25563140f69f2a30f54d4d34f6aa55e73c5ff13. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfcb7115dbb4ad2a8fa0ebccf03c29623453d95cd53a45bcd2cf753e4d19454. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66550bcbe165e32d1e54aa0121c0da78e28f6a6b43856347dece525db9733462. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e16311ea57be4df028ad8c6bf000a67accb2663fab26aab6311f040a7c277c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88382ed95adf7314246fecb085a67e614f4328e4d4d5a6e07400229dcaf96043. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd911d28eecfd6e2a3b900f3c260fc4776cd04b36c7766b43c381123d3cada6c3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4847a74045da92d0944d3b7355832dab13f51a3d1fc42c0806f7f4a4c7be3d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627102.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a57a2ad7da1d8916f3b781870da97ce890fe8d7417e618c110fbe5b3bfb876. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc2de5ced2ff894b84fae20e665ef58465f5627bc895116e2eda0d1e0d8e7a7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374731e4366afc23f273ee204b28985b4d5f92daf4ffea11e6a510e830935aef. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ed3c6f1940e243a98908b52940c8a0611bb6bc385ed9a7557e7746f3dc87fb. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb96abc36380a014b854d1645c931e85eb7a307f330fc0af0411876a4a8ee77. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2094603f95023ada364163372ff2b441732befa1caab9e88141ef8ce3e4fa6a. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cea3a77a1a10322e1d53529c7b571f791938d2c0143b89fb70047ce098846b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174c5724846c67cf87c861b18212b62b26143b9b0b37f03ae7539ebcf49c1927. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA011627116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683abf9f925580138cd4fec589948e7ab1d1378c30c15ffe88bfce51f93df701. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4DW1776620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832d8c74810f04a5bdc3bf658eca4f187c382172651536fc13586e666ab0e39e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1752824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778bd3dc42cb0d94f059327986276413cd1f5df4aa91d81be652488220f4b17c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1752826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789598255f0ad7e8a7c6f657e0ca05bec91bcf6b543952efa8be0498a246ebdd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1752828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95e40eb6a1dffac24c4539b1efb711de4a19362f5498e0db16c001ea17d1161. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1752829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f56416bce478a61cc324b0639abf0489d19f93f9819a3622ba79425b4be0cd5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1752830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e395a9b949be857fa97b4c9fe6c18aaf8b07632c5644382fe67506841a68a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1752833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8779dc977b556c7fa9e1a3d14963f02289e53782ac1325d032fe357e906cb4c0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1752820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939c7044f3b4ae1ee87d28e9c5cf21564828bd65b866cd0a092c66fe4b74defc. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1752822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd96b4f4b43e50744b453452d3b0839a3884316dab0085eeb5dbf887831f6aae. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1752825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6599302fe4a9d043eb75ca4ec3d62e095fc612cdfca23c5e25e8613ad7f150b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMPKX1758409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9181b7536cbeb5f464e1d7ed4e6a11ff0b88e86b846363c8a832a964e9940e2f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM2PV1705225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd606af6e1bdbb909ef46d44b44a2823154f1347b7f77e60bdf71248b11a0d1a7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADM1896301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4d9e4b84c6acf8edfc815384875c6c2ca0c6f914a5b1393c8e85f32df74e75. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADP1896035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8dabf8be5783f92ad61fb5aebff2a297024c7bf1062c1392f3461a539b3f29. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:20:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADQ1803384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51cfe7c3662a11f69d4eb31dc65f873e0d2ee71e5a5f1b5b46567fb2564e5c0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:58:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEC1979667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6c351e543d461d7cd4744ab71bf9eaa0047ecdb594e2648af2c3c9ce81ad7b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2371897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edb588127792629b4de95e4bfb9992c6fbc84faf76ceffcbbbedeb22f01c406. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2495529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5399001a2aa346b540a327a3b8716671061c3146d0b48212b0db031ad35a85. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2495489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a28da9a4a2b6f10c8b3228548b58b701eaf9d002bb3b6907aeeed9f5e320cd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMF2548232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a03250614c3721c2afcb1e296302cde4dad80c2e5ad42b648dc07a35df62879. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2015992.